package com.itemwaimai.reggin.controller;

import com.alibaba.druid.sql.ast.expr.SQLUnaryExpr;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itemwaimai.reggin.common.R;
import com.itemwaimai.reggin.dto.DishDto;
import com.itemwaimai.reggin.entity.Category;
import com.itemwaimai.reggin.entity.Dish;
import com.itemwaimai.reggin.entity.DishFlavor;
import com.itemwaimai.reggin.service.CategoryService;
import com.itemwaimai.reggin.service.DishFlavorService;
import com.itemwaimai.reggin.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {


    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增加菜品
     * @param dishDto
     * @return
     */
    @PostMapping("")
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息的分页 (菜品分类类型 和菜品表分类)(多表查询)
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //构造分页构造器
        Page<Dish> pageInfo =new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage =new Page<>();
        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper =new LambdaQueryWrapper<>();
        //过滤条件
        queryWrapper.like(name !=null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝 ignoreProperties(忽略的意思)忽略 records (查询列表)
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item)->{
            DishDto dishDto =new DishDto();

            //对象拷贝(左边拷贝到右边)
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            //category不等于空的时候才去设置
            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息(多表查询)
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    //http://localhost:8082/dish/1576064230841446402(后面传的属性 所以使用@PathVariable)
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    //http://localhost:8082/dish/1576064230841446402(后面传的属性 所以使用@PathVariable)
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        log.info(dish.toString());
//        //构造查询条件
//        LambdaQueryWrapper<Dish> queryWrapper =new LambdaQueryWrapper<Dish>();
//        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//        //添加条件，查询状态为1(起售状态)的菜品
//        queryWrapper.eq(Dish::getStatus,1);
//        //排序条件
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//        List<Dish> list = dishService.list(queryWrapper);
//        return R.success(list);
//    }
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        log.info(dish.toString());
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper =new LambdaQueryWrapper<Dish>();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1(起售状态)的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> DishDtoList = list.stream().map((item)->{
            DishDto dishDto =new DishDto();

            //对象拷贝(左边拷贝到右边)
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            //category不等于空的时候才去设置
            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper =new LambdaQueryWrapper();
            //SQL:select * from dish_flavor where dish_id = ?
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());



        return R.success(DishDtoList);
    }
}
